橡胶混凝土单轴压缩应力应变全曲线数学描述  

Mathematical Description of the Full Stress-Strain Curve of Rubber Concrete

作　　者：胡仁桂 Hu Rengui

机构地区：[1]江苏省建工建材质量检测中心有限公司,江苏南京210008

出　　处：《江苏建材》2022年第4期23-25,共3页Jiangsu Building Materials

摘　　要：橡胶混凝土作为一种新型建筑材料能够有效减少废旧橡胶对环境的污染,同时具有较好的韧性和阻尼特性。文章考虑橡胶掺量对混凝土强度和变形等基本力学指标的影响,并基于Lemaitre应变等价性假定提出了一个新的统计损伤模型。计算结果表明,随着橡胶掺量增大,橡胶混凝土单轴压缩强度和弹性模量会出现不同程度的减小,而峰值强度对应的轴向应变则呈线性增长的趋势,在外部荷载作用下试样更容易发生延性破坏。As a new type of building material,rubber concrete can effectively reduce the pollution of waste rubber to the environment.Meanwhile,it has good toughness and damping properties.This paper considers the influence of rubber content on primary mechanical indexes such as concrete strength and deformation and proposes a new statistical damage model based on the Lemaitre strain equivalence assumption.The calculation results show that with the increase of rubber content,the uniaxial compressive strength and elastic modulus of rubber concrete will decrease to varying degrees,while the axial strain corresponding to the peak strength shows an increasing linear trend.The lower sample is more prone to ductile failure.

关 键 词：橡胶混凝土 应力应变曲线 损伤模型 

分 类 号：F767.5[经济管理—产业经济]